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Alternate primers for whole-genome SARS-CoV-2 sequencing
Matthew Cotten1,2, Dan Lule Bugembe1, Pontiano Kaleebu1,3
1MRC/UVRI & London School of Hygiene and Tropical Medicine, 51-59 Nakiwoggo Road, Entebbe, Uganda.
Virus Evolution
|April 12, 2021
Summary
Gaps in Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) genome sequences hinder virus tracking and drug development. This study introduces an improved primer set and sequencing strategy to enhance genome quality and completeness.
Area of Science:
- Virology
- Genomics
- Infectious Disease Control
Background:
- The global effort to control SARS-CoV-2 requires accurate viral genome sequences.
- Gaps in sequencing data reduce the utility of viral genomes for tracking evolution and developing countermeasures.
- Existing SARS-CoV-2 sequencing methods result in 19-43% of monthly genomes containing gaps.
Purpose of the Study:
- To analyze the frequency and location of genome gaps in available SARS-CoV-2 data.
- To propose an alternative primer set and sequencing scheme to improve genome quality and coverage.
Main Methods:
- Analysis of genome gap frequencies and positions in publicly available SARS-CoV-2 sequences.
- Development and evaluation of an alternative primer set and sequencing strategy.
Main Results:
- Documented genome gap frequencies and their specific locations within the SARS-CoV-2 genome.
- Identified an alternative primer set and sequencing scheme designed to increase data quality and coverage.
Conclusions:
- Addressing gaps in SARS-CoV-2 genome sequencing is crucial for effective pandemic response.
- The proposed primer set and sequencing scheme offer a potential solution to improve the completeness of viral genome data.
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